North American Registry of Midwives (NARM) Practice Exam

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For how long is a contraceptive sponge effective after insertion?

3 hours
6 hours
12 hours
24 hours

The correct answer is: 6 hours

A contraceptive sponge is designed to provide effective contraception for up to 24 hours after insertion. The sponge contains spermicide, which helps to immobilize or kill sperm, and it also acts as a physical barrier to prevent sperm from entering the cervix. After insertion, it is recommended to leave the sponge in place for at least 6 hours after intercourse to ensure that the spermicide has sufficient time to be effective. However, it can remain effective for the full 24-hour period, allowing for multiple acts of intercourse within that time frame without needing to reinsert or replace the sponge. In this case, while six hours is a necessary minimum duration to maintain effectiveness after intercourse, the sponge's capacity for extended use up to 24 hours is what makes it a convenient option for many users. Therefore, the correct understanding would be that the sponge's effectiveness spans the entire 24-hour period after insertion, but must remain in place for at least 6 hours post intercourse to ensure optimal protection.